LG 32LG500H - Page 14

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6. EDID(The Extended Display
Identification Data) / DDC(Display
Data Channel) download
6.1. Required Test Equipment
1) Adjusting PC with S/W for writing EDID Data.
2) A Jig for EDID Download
3) Cable: Serial (9Pin or USB) to D-sub 15Pin cable, D-sub
15Pin cable, DVI to HDMI cable.
6.2. Setting of device
- When input HDMI EDID data through RGB or HDMI jack,
writing 8bits of the data at every turn with 'DDC2B' protocol.
6.3. Data of EDID
(1) DDC data of Analog-RGB
(2) DDC data of Digital-HDMI1
(3) DDC data of Digital-HDMI2
* Before adjustment of white balance, should be executed the
'color balance adjustment'
7. Adjustment of White Balance
7.1. Required Equipment
- Remote controller for adjustment
- Color Analyzer (CA-210 or same product )
- Auto W/B adjustment instrument(only for Auto adjustment)
- Use inner(SELF) Pattern
7.2. Adjustment of White Balance
(For Manual adjustment)
- Set TV input to RF.
- Operate the zero-calibration of the CA-210, Ch.9.
- Then stick sensor to LCD module surface when you adjust.
- For manual adjustment, it is also possible by the following
sequence.
1) Select white pattern of heat-run mode by pressing power
on key on remote control for adjustment then operate
heat run more than 15 minutes.
2) Enter the White Balance adjustment mode by pressing
the INSTART key twice (White Balance) on R/C.
3) Stick sensor to center of the screen and select each
items using
D/E(CH +/-) key on R/C.
4) Adjust G Gain / B Gain using
F/G(VOL +/-) key on R/C.
5) Adjust it until color coordination becomes as below.
- By controlling G, B GAIN, adjust X, Y target value.
- R Gain fixed at cool, normal, warm mode.
- But, Control the R GAIN, unless it has correct value
(Initially, R/G/B gain and R/G/B offset values are fixed as below.)
Red Gain: 80h Green Gain: 80h Blue Gain: 80h
Red Offset: 80h Green Offset: 80h Blue Offset: 80h
*Target value
6) When adjustment is completed, Exit adjustment mode
using EXIT key on R/C.
LGE Internal Use OnlyCopyright LG Electronics. Inc. All right reserved.
Only for training and service purposes
<Fig.4> Connection Diagram of DDC download
X Y Temp (∆ uv)
Cool 0.276 ± 0.002 0.283 ± 0.002 11000k (0.000)
Normal 0.285 ± 0.002 0.293 ± 0.002 9300k (0.000)
Warm 0.313 ± 0.002 0.329 ± 0.002 6500k (0.003)